Tool for marking livestock



FIG. 1 is a front, left perspective view of a tool for marking livestock of the present disclosure;

FIG. 2 is a rear perspective view thereof:

FIG. 3 is a front elevation view thereof:

FIG. 4 is a right-side elevation view thereof:

FIG. 5 is a rear elevation view thereof:

FIG. 6 is a top plan view thereof; and,

FIG. 7 a bottom plan view thereof.

The broken lines illustrate portions of the tool for marking livestock that form no part of the claimed design. 

CLAIM The ornamental design for a tool for marking livestock, as shown and described. 